BQ25618E: BQ25618E-Leakage current

switch

Genius 3160 points

Part Number: BQ25618E

Hi ti Team，

What is the leakage current when BQ25618E is full?

over 1 year ago

0 Michael Emanuel35 over 1 year ago

TI__Mastermind 35885 points

Hello,

Someone will get back to you by next Tuesday.

Regards,

Mike Emanuel

0 Michael Emanuel35 over 1 year ago in reply to Michael Emanuel35

TI__Mastermind 35885 points

Hello,

Please check out:

1. IQ_BAT, or Quiescent battery current (BATSNS, BAT, SYS, SW). This is typ 9.5 uA and max15 uA.

2. ISHIP_BAT, or Shipmode battery current (BATSNS, BAT, SYS, SW). This is typ 7 uA and max 9.5 uA.

Regards,

Mike Emanuel

0 switch over 1 year ago in reply to Michael Emanuel35

Genius 3160 points

Hi Michael,

1. IQ_BAT, or Quiescent battery current (BATSNS, BAT, SYS, SW). This is typ 9.5 uA and max15 uA.Is IQ_BAT an Ibat leakage current?

Using EVM tests are as follows:

Ibat leakage when the battery full charged.

Test condition:BAT = 4.35V(Cut-off voltage), VBUS = 5V, SCL, SDA = 0V or 1.8V, BATFET enabled ,Ibat leakage current=110uA

Why is the Ibat leakage current 110uA when Vbus=5V?

0 Michael Emanuel35 over 1 year ago in reply to switch

TI__Mastermind 35885 points

Hello,

Please check your pullups. Pullups on I2C, CE, etc. will cause leakage from the battery as well.

Regards,

Mike Emanuel

0 switch over 1 year ago in reply to Michael Emanuel35

Genius 3160 points

Hi Michael，

Using the bq25618EVM test，Ibat leakage current=110uA.Please check it.As shown below.

VBUS =4.9899V

Vbat=4.43V （Cut-off voltage）

I2C=0V

Ibat leakage current=110uA

0 Michael Emanuel35 over 1 year ago in reply to switch

TI__Mastermind 35885 points

Hello,

With battery charge voltage limit set to 4.35 V, VBAT voltage at 4.43 V (BATOVP), SDA at 0 V, and VBUS at 5.19 V the leakage from the battery is 105 uA. With the same conditions with VBUS at and above 5.67 V, the leakage from the battery is expected 13.7 uA. With the same conditions with VBUS below 3.35 V, the leakage from the battery is expected 9.7 uA. Please keep VBUS disconnected, above around 5.67 V, or below around 3.35 V to achieve desired IQ.

Regards,

Mike Emanuel

0 switch over 1 year ago in reply to Michael Emanuel35

Genius 3160 points

Hi Michael，

Datasheet Description VBus=0V-5V，Then the Datasheet description is wrong.

0 Michael Emanuel35 over 1 year ago in reply to switch

TI__Mastermind 35885 points

Hello,

We are working to investigate this. Can you please explain your use case and how this affects your solution?

Regards,

Mike Emanuel

0 switch over 1 year ago in reply to Michael Emanuel35

Genius 3160 points

Hi Michael,

The customer wants to confirm whether the test method is wrong or the specification is written incorrectly.

The customer thinks that too much leakage current will shorten recharge time.

0 Michael Emanuel35 over 1 year ago in reply to switch

TI__Mastermind 35885 points

Hello,

We are working on updating our datasheet for the next revision. As stated earlier, please keep VBUS disconnected, above around 5.8 V, or below around 3.2 V to achieve desired IQ.

Regards,

Mike Emanuel

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BQ25618E: BQ25618E-Leakage current